Graphical user interface for a display screen or portion thereof



FIG. 1 is a front view of a graphical user interface for a displayscreen or portion thereof showing my new design;

FIG. 2 is a front view of a second embodiment thereof;

FIG. 3 is a front view of a third embodiment thereof;

FIG. 4 is a front view of a fourth embodiment thereof; and,

FIG. 5 is a front view of a fifth embodiment thereof.

The broken lines showing a portion of, a display screen, text and otherelements in the Figure form no part of the claimed design.

The ornamental design for a graphical user interface for a displayscreen or portion thereof, as shown and described.